基于薄金属圆盘近场衍射的固态-原子混合系统

doi:10.16180/j.cnki.issn1007-7820.2020.04.005

电子科技 ›› 2020, Vol. 33 ›› Issue (4): 23-28.doi: 10.16180/j.cnki.issn1007-7820.2020.04.005

基于薄金属圆盘近场衍射的固态-原子混合系统

聂之峰¹,王正岭²

^1. 江苏大学机械工程学院,江苏镇江 212013
^2. 江苏大学理学院,江苏镇江 212013

收稿日期:2019-03-08 出版日期:2020-04-15 发布日期:2020-04-23
作者简介:聂之峰(1994-),男,硕士研究生。研究方向:微纳米光学等。|王正岭(1971-),男,博士,教授。研究方向:微纳米光学等。
基金资助:
江苏省自然科学基金(BK20161342);江苏省高校自然科学研究重大项目(15KJA140001);江苏省"六大人才高峰"高层次人才项目(GDZB-018)

Solid-atom Hybrid System Based on Near-field Diffraction of a Thin Metal Circular Disk

NIE Zhifeng¹,WANG Zhengling²

^1. School of Mechanical Engineering,Jiangsu University,Zhenjiang 212013,China
^2. School of Science,Jiangsu University,Zhenjiang 212013,China

Received:2019-03-08 Online:2020-04-15 Published:2020-04-23
Supported by:
Natural Science Foundation of the Jiangsu Province(BK20161342);Key Project of Natural Science Research of Higher Education Institutions of Jiangsu Province(15KJA140001);“Six Talent Peaks”Project in Jiangsu Province(GDZB-018)

摘要/Abstract

摘要：

为实现纳米器件表面冷原子的囚禁,需深入研究圆盘矢量衍射在近场中的传播规律。文中采用有限元方法研究了线偏振平面波经过亚波长薄金属圆盘的衍射问题。研究发现在近场范围内,衍射场中不仅存在原偏振方向的入射场,而且在其它两个垂直方向上也有强度分布(随着传播距离增大很快衰减消失)。在此基础上,文中提出一种薄金属圆盘与原子耦合的混合系统。薄金属圆盘矢量衍射在近场形成的亚波长势阱,可以对100 nm以内单个或少量冷原子进行囚禁。通过改变圆盘参数,可以对混合系统中原子势阱的囚禁距离与势阱体积进行调控。该结果对微纳米光学器件研究及原子物理提供了一种新的混合系统方案。

关键词: 混合系统, 纳米金属圆盘, 矢量衍射, 近场特性, 原子囚禁, 有限元

Abstract:

In order to realize the confinement of cold atoms on the surface of nano-devices and thoroughly study the propagation law of disk vector diffraction in near field, the diffraction of the thin met al disk by a linearly polarized plane wave is studied by the finite element method. It was found that in the diffraction field, there was not only the incident field in the original polarization direction, but also the intensity distribution in the other two vertical directions. On this basis, A hybrid system of a thin met al disk coupled with atoms was proposed. A subwave well formed by a thin met al disk vector diffraction in the near field, which could trap the small number of cold atoms within 100 nanometers. The trapped distance and volume of the potential well could be controlled by changing the parameters of the disk. These results provided a new hybrid system scheme for micro-nano optical devices and atomic physics.

Key words: hybrid system, nanometre metal disk, vector diffraction, near field characteristic, atomic trapping, finite element

中图分类号:

TN29

聂之峰,王正岭. 基于薄金属圆盘近场衍射的固态-原子混合系统[J]. 电子科技, 2020, 33(4): 23-28.

NIE Zhifeng,WANG Zhengling. Solid-atom Hybrid System Based on Near-field Diffraction of a Thin Metal Circular Disk[J]. Electronic Science and Technology, 2020, 33(4): 23-28.

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基于薄金属圆盘近场衍射的固态-原子混合系统

Solid-atom Hybrid System Based on Near-field Diffraction of a Thin Metal Circular Disk

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